Báo cáo lâm nghiệp: "Litterfall, nutrient return, and leaf-litter decomposition in four plantations compared with a natural forest in subtropical China" ppt

... xylocarpa (OX) and Castanopsis kawakamii (CK), and compared with that of an adjacent natural forest of Castanopsis kawakamii (NF, ~150 year old) in Sanming, Fujian, China. Mean annual total litterfall ... Ormosia xylocarpa (OX), and Castanopsis kawakamii (CK), and an adjacent natural forest of Castanopsis kawakamii (NF); (ii) quantify nutrient return through litterfall...

Ngày tải lên: 08/08/2014, 01:22

... broadleaved trees, Ormosia xylocarpa (OX) and Castanopsis kawakamii (CK), and compared with that of an adjacent natural forest of Castanopsis kawakamii (NF, ~150 year old) in Sanming, Fujian, ... Ormosia xylocarpa (OX) and Castanopsis kawakamii (CK), and an adjacent natural forest of Castanopsis kawakamii (NF): (1) fine-root biomass, distribu- tion and seasonal pattern...

Ngày tải lên: 08/08/2014, 01:22

... (ETR) at increasing radiation intensity showed a similar trend among the variants in samples in fresh condition and dam- age caused by freezing test increasing from “small” to “large” variants. ... damage Index Stem damage no damage substitute shoots stem breakages 0 1 2 Branch damage no damage moderate damage (small injuries, breakages of weak branches) medium damage (larger injur...

Ngày tải lên: 07/08/2014, 10:21

... that oxalate was always the main organic anion (> 90%) produced by the fungi studied, with minor quantities of citrate, succinate, malate and tartrate (data not shown). Measurements of total ... dishes was inverted and measure- ments were carried out in a Faraday cage by inserting both electrodes to a depth of 1 mm. The pH was measured directly above the initial plug and at 0...

Ngày tải lên: 08/08/2014, 01:21

... is a limiting factor for plants, animals and humans themselves. e amount of (surface and ground) water significantly in uences, both in a positive and negative way, the processes of biomass ... P Institute of Forest Ecology of the Slovak Academy of Sciences, Zvolen, Slovakia ABSTRACT: e paper deals with throughfall and soil percolation in a sub-mountain beech f...

Ngày tải lên: 07/08/2014, 03:22

... mountain altitudes (Č 2007). Mountain stands can be considerably damaged mainly during winter and at the beginning of spring as a result of ‘physiological drought’. is damage is caused ... precipitation in February and March of the year in question. e standard tree-ring chronology shows an obvious decrease in radial increments starting at the beginning of the 1970s a...

Ngày tải lên: 07/08/2014, 03:22

... the height increment of species such as Crateva benthami and Tabebuia barbata increased rapidly within 3 weeks of the flood subsiding. In con- trast Cecropia latiloba and Vitex cymosa recovered ... waterlogged Quercus robur seedlings considerably. Biomass and plant height, as well as CO 2 assimilation rates and stomatal conductance decreased significantly with a rising wate...

Ngày tải lên: 07/08/2014, 03:22

... planted out on acidic sites in forest altitudinal vegetation zones 6 and 7 in areas most threatened with air pollution – in damage zones A and B. In these localities, sycamore maple is planted ... development, health condition and growth in forest altitudinal vegetation zones (FAVZ) 6 and 7 occurring in pollution damage zones A and B in the air-polluted r...

Ngày tải lên: 07/08/2014, 04:20

... [L.] Karst.), Scots pine (Pinus sylvestris L.) and European larch (Larix decidua Mill.). MATERIAL AND METHODS  e material for the sample preparation was do- nated by the company Lesy města Náchoda ... pine grown in New Zealand. New Zealand Forest Service Forest research In- stitute, Technical Paper 4: 34. H J. M. (1981): Wood quality of radiata pine. Appita, 35: 211–215 L...

Ngày tải lên: 07/08/2014, 10:21

... separately (A) . e mixed stand sample was analyzed. e mixed sample was composed of three spots in each stand. Chemical analyses were done in the FGMRI labo- ratory. e amount of available nutrients ... Declining Norway spruce stands are situated in a region of historically high air pollution load, mainly from the Třinec and Ostrava agglomeration. Air pol - lution significantly d...

Ngày tải lên: 07/08/2014, 10:21